fix: Fix counter metric type to be Counter. (#3153)

## What ❔

Fix counter metric type to be Counter.
<!-- What are the changes this PR brings about? -->
<!-- Example: This PR adds a PR template to the repo. -->
<!-- (For bigger PRs adding more context is appreciated) -->

## Why ❔

To have correct calculation of network errors across restarts.
<!-- Why are these changes done? What goal do they contribute to? What
are the principles behind them? -->
<!-- Example: PR templates ensure PR reviewers, observers, and future
iterators are in context about the evolution of repos. -->

## Checklist

<!-- Check your PR fulfills the following items. -->
<!-- For draft PRs check the boxes as you complete them. -->

- [x] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ ] Tests for the changes have been added / updated.
- [ ] Documentation comments have been added / updated.
- [x] Code has been formatted via `zkstack dev fmt` and `zkstack dev
lint`.

Author: yorik

core/bin/zksync_tee_prover/src/metrics.rs

@@ -2,7 +2,7 @@
 
 use std::time::Duration;
 
-use vise::{Buckets, Gauge, Histogram, Metrics, Unit};
+use vise::{Buckets, Counter, Gauge, Histogram, Metrics, Unit};
 
 #[derive(Debug, Metrics)]
 #[metrics(prefix = "tee_prover")]
@@ -13,7 +13,7 @@ pub(crate) struct TeeProverMetrics {
     pub proof_generation_time: Histogram<Duration>,
     #[metrics(buckets = Buckets::LATENCIES, unit = Unit::Seconds)]
     pub proof_submitting_time: Histogram<Duration>,
-    pub network_errors_counter: Gauge<u64>,
+    pub network_errors_counter: Counter<u64>,
     pub last_batch_number_processed: Gauge<u64>,
 }
 

core/bin/zksync_tee_prover/src/tee_prover.rs

@@ -155,7 +155,7 @@ impl Task for TeeProver {
                     }
                 }
                 Err(err) => {
-                    METRICS.network_errors_counter.inc_by(1);
+                    METRICS.network_errors_counter.inc();
                     if !err.is_retriable() || retries > config.max_retries {
                         return Err(err.into());
                     }